Re: [vserver] Copy-on-write Hard Links, Shared Libraries, Prelink and Memory

From: Eugen Leitl <eugen_at_leitl.org>
Date: Thu 10 Jun 2010 - 16:54:59 BST
Message-ID: <20100610155459.GX1964@leitl.org>

On Thu, Jun 10, 2010 at 09:01:28AM -0500, Michael S. Zick wrote:

> The difference between taking down the host and 253 (paying?) guests with

It's a mockup/test server. An Atom with 4 GBytes probably
won't handle more than 50 lightly loaded guests. I don't
know yet.

> a single file system failure;

If things fail, I can reboot from the second disk.

> vs
> Only taking down one of them (or some small set).

In that cost bracket there's no availability. There's
redundancy, and a daily backup.
 
> And you aren't even using RAID for storage. Duh...

I am actually using a poor man's RAID. Mirroring
SSDs along with normal drives is not possible with
the packing density and budget.

I intend to solve the problem of reliability by throwing
cheap (~500 EUR/server) hardware at the problem.
 
> Other (should be obvious) reasons.

If you're flush in cash and customers, you can do other
things. I'm neither.

-- 
Eugen* Leitl leitl http://leitl.org
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Received on Thu Jun 10 16:55:44 2010
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